chimingClock

Standing clock that always shows correct time, and every quarter of an hour plays Westminster chimes.

This application is designed to have minimal user interaction -- it just works out of the box.

Despite variety of different clocks available on the app store, which support all sort of features and customizations, it's not easy to find a clock which shows only time and requires minimal user interaction and customizations -- in which case, chimingClock is exactly what you are looking for.